*cracks knuckles* :-D
Yes, Jango was mandalorian. Actually, since the Mandalorians have been around for a while, their armor has evolved through the years.
The clones weren't raised to be mandalorians. However, the mandalorian instructors Jango hired to train the commandos taught them the culture, feeling that without the culture, they were dar'manda, or dead men.
Darn, I'm a geek, aren't I?